Wave motor



. L. MITELMAN.

WAVE MOTOR. APPLICATION FILED Jun'Ez. 1921.

. Pafented June 20, 1922.

a, a TM L. z .7 & m d W W L. MITELMAN.

WAVE MOTOR 2 SHEETS-SHEET 2.

LEON MITELMAN, or endured-Ir nians. r

' WAVE MOTOR:

Sp'ecification' of Letters Patent. atented June 20, 1922,

Application filed June 2, 1921;] Serial no. 474,343.:

and State of Illinois, United States of America, have invented certain new and use- ,ful Improvements in a WVave Motor, of

which the following is a specification.

My invention relates to motors and more a 7 illustrating the manner of installing my inparticularly to that class of apparatus known as wave-motors wherein the rise and fall of the waves with respect to the motorand its support 'Willcause' a rotation of the drive shaft of the apparatus.

Heretofore, so far as I am aware, most wave or tide motors have relied solely upon having a fixed structure securely anchored so that the rise and fall of the waves or tide will cause a movement of the drive shaft, whereas in my present invention I rely more or lesson the submergence of the actuating means into the water during the pitch or roll of a body floating upon or borne upon the surface of the water such as a boat or vessel, and my invention is especially capable of being effectively employed when the vessel is in motion as when travelling from place to place. Also I have so-designed and arranged the. actuating mechanism that the structure which operates upon a downward movement of the boat isrendered ineffective upon the upward movement of the boat, and vice versa. Furthermore, I have so designed my generator that the depressing of the structure in the water will be effective upon one particular mechanism or element, whereas the lifting of the structure will operate another mechanical element, but both these elements are so designed and are mounted upon a common shaft that is driven in but one direction by the two mechanisms.

I prefer to carry out my invention in sub stantially the manner hereinafter described, the drawing illustrating atypical structure and is merely diagrammatic for the purpose of disclosing the principles involved.

In the drawings Figure 1 is a longitudinal view of a type of installation of my invention the samebeing shown within the hull of a vessel at the bowl and stern thereof. r y

Figure-2 is a plan of the vessel showing the decks at the-bow and stern broken away to disclose the installation of my invention in the hull.

Figure 3 is a vertical axial section vessel.

10 m Figure 9,

,vessel, of the actuating mechanism; -,-of my motor and drawngto, ailargeiscale than theprecediiig figures, 7 v

Figie 41's a transvers .seetien thereof taken on line 4-4, Figure 3.

Figure 5 isaschematic illustration of the operation of a closure device in connection withthe blades of the turbines or wheels.

Flgure 6 is a view similar to Figure 1 ventionupon theexterior of the hull of the Figure 7 isa stern, view of the structure illustratedin Figure 6. V

Figure 8' is a sectional view taken on the vertical axis of" the actuating echanism illustrated in Figures .6 and 7 drawn to a larger scalev and providedwith a hinged valve closure for turbine blades.

I Figure 9 is a transverse section taken on line 9-9 of Figure 8.

Figure 1 0 is afra-ginentary tion, of the valve for closure,

detail in sectaken on line The manner of installing and utilizing my'invention is capable of variousembodiments and to this end I have illustrated two types which contemplate theuse of my motor both inside and outside the hull of a navigable vessel. ated that a scow or other suitable float may be utilized inlieu of the vessel withoutaltering-orjchaugingfthe principles of opera tion of iny invention.

In"Figures 1, 2, and 3, the ino'toris installed -inside the-vessel, vand to do that I providegone or more chambers or compartments 15 within the hull, 16,, preferably at the bow andstern thereof; These compartments are preferably constructed in such manner that they maybe freely opened to the sea or body of. waterjin which the vessel is floating but may be" readily closed in the event thetu'rbine or -motor is not being ope-ra.ted.f This is doneby cutting out portions 17 in the wan of the hull adjacent the com- Y partme tsana providing suitable doors ;18

thereforthat are hinged'or ether-wise mountedandwhich ,a'refpiovided with gaskets or otherwise constructed to render the 'same water tight when the doors are closed, It will Ilof course be understood the walls of the chamber within'the hull are water-tight to prevent leakage into the hold. of the It ofcourse will ,beappreci- Astliecompartiiieuts 15 and. the deemin mechanism therein are the same throughout,

' I will proceed to describe but one for the naled in a bearing collar 21 and the upper portion or end of this shaft is suitably connected to any mechanism it is desired to actuate, such as an electric-generator, aircompressor, etc., indicated diagrammatically at 22 in the drawings.

Intermediate the top and bottom of the compartment two sets of blades or turbines are rigidly secured to the shaft 20, the upper being designated as 23 and the lower as 24, that are spaced apart a suitable distance and have their blades disposed in opposite directions with respect to each other. This arrangement is illustrated in the sketches comprised in Figure 5 of the drawings, the object of such an arrangement being to permit the lower turbine 24 to be actuated when the structure is being depressed or moved downwardly in the water and the upper turbine 23 to be actuated upon an upward movement of the structure, so that the shaft 20 will be rotated in but one direction. To further assist in carrying out this principle of my invention I have provided a sliding sleeve 25 upon the shaft 20 between the turbines and at the opposite ends of said sleeve I secure disks 26 and 27 of approximately the diameters of the respective turbines. These disks are of buoyant or semi-buoyant material preferably wood or the like, and in operation one disk will lie against the adjacent face of its respective turbine while the opposite disk is away from its turbine ;in other words, the disks act as valves to open or close the turbine members according to the direction of movement of the structure in the water. 7 r 7 As seen in Figure 3 of the drawings the structure is being moved upwardly in the water and the upper valve is open to permit the water to flow through the upper turbine member and rotate the same while the lower valve is closed rendering the lower turbine unsusceptible to the action of the water which discharges above the disk 27 out of the compartment and back into the sea as indicated by the arrows. The action of the valves and the respective turbine members with respect to the flow of water through the structure in both directions isinolicated in the schematic sketches forming Figure 5 in which the vertical arrows indicate the flow of the water and not the direction of movement of the vessel or compartment in a vertical direction, such as the pitch and scend in riding the waves.

In the structure illustrated in Figures 6 to 10 of the drawings, the casings and turbines in the form of units are provided that are mounted at divers locations upon the outside of the hull of the vessel as indicated in Figures 6 and 7, and hinged valve-plates or closures are employed for each turbine member in lieu of the reciprocating sleeve and disks heretofore described.

The casing 30 of this type of structure is of cylindrical shape throughout its intermediate or central portion and the upper and lower ends thereof are flared or funnelshaped as at 31 in the drawings, the structure being secured to the hull in any suitable manner. In the lower end of the casing I mount the thrust bearing 32 that supports and journals the lower end of the rotatable driving shaft 33 the upper portion of which passes through a suitably packed opening and bearing in the wall of the hull and extends into the boat structure preferably below the deck where it may be readily connected to any suitable mechanism as in the first-described type of structure. Within the intermediate portion of the casing 30 I mount the upper and lower turbines or propellers, 34 and 35 respectively, upon the shaft 33 with the blades or vanes of one turbine disposed in opposite inclinations to those of the other, and between the transverse or horizontal planes of these turbines I prefer to cut-away the greater portion of .the casing to permit of the ready discharge causes a depression of the casing the water will flow upwardly through and act upon the lower turbine 35 but will pass out through the openings 37 because the closure of the valve-plates on the upper turbine 34 will prevent it acting thereon, and when the vessel causes a lifting action on the casing the reverse operation takes place, it being understood, however, that both the up and down motion of the casing in the water will cause a rotation of the shaft 33 in one direction and this movement of the shaft will be substantially continuous so long as the vessel is subjected to the action of the waves.

In the operation of my apparatus it will be understood that the roll or motion of the vessel is not alone relied upon for the operation of the turbines and their connected shaft, but this same eifect is obtained upon a large vessel where the roll is but, slight and the up and down motion of the waves passing the boat will perform the function desired,

What I claim is 1. A motor comprising a float, an elongated casing rigidly secured thereto and below the water-line of said float, a rotatable shaft positioned in said casing and extended upwardly out of the same, means for mounting said shaft, rotatable devices secured to said shaft within said casing in spaced relation to each other, one of said devices affected by the passage of water through said casing in one direction and the other devices affected by the passage of water in the opposite direction, whereby said shaft is continuously rotated in a given direction.

2. A motor comprising a float, an elongated casing rigidly secured thereto below the water-line of said float, a rotatable shaft positioned in said casing and extended upwardly out of the same, means for mounting said shaft, rotatable devices secured to said shaft within said casing in spaced relation to each other, one of said devices affected by the passage of water through said casing in one direction and the other device affected by the passage of water in the opposite direction, whereby said shaft is continuously rotated in a given direction, said casing intermediate said rotatable devices provided with outlet ports to discharge the water moving through the casing in either direction.

3. A motor comprising a float, an elongated casing rigidly secured thereto and below the water-line of said float, a rotatable shaft positioned in said casing and extended upwardly out of the same, means for mounting said shaft, rotatable devices secured to said shaft within said casing in spaced relation to each other, one of said devices affected by the passage of water through said casing in one direction and the other device affected by the passage of water in the opposite direction, whereby said shaft is continuously rotated in a given direction, and control members upon each rotatable device adapted to render the respective device ineffective when the Water flow is moving in a direction opposite to that required to actuate the respective device.

4. A water motor comprising a float, a submerged elongated casing supported thereby and provided with outlet ports intermediate its ends, a thrust bearing in the lower portion of said casing, a rotatable shaft mounted in said bearing and extended upwardly out of said casing, turbine wheels mounted upon said shaft within said casing in spaced relation to each other upon opposite sides of said outlet ports and having their blades arranged in opposite directions, and closure means for each turbine wheel whereby when the water is passing through one of said turbine the blades of the other turbine are unaffected by the flow of water and vice versa.

5. A wave motor comprising, in combination with a float, a rotatable shaft ournaled thereon, upper and lower turbines mounted on said shaft, and means that alternately cover and open said turbines to the passage of water therethrough, whereby the downward movement of said float causes the water to flow through and actuate the lower turbine and the upwardly movement of said float causes the water to flow through and actuate the upper turbine.

6. A wave motor comprising, in combination with a float, a turbine actuated by the relative movement between the water and float in one direction, a second turbine actuated by the relative movement between the water and float in the opposite direction, and a common shaft journaled on said float to which said turbines are secured, said shaft being rotated in one direction by the move ment of both turbines.

7. A wave motor comprising, in combination with a float, a turbine actuated by the relative movement between the water and float in one direction, a second turbine actuated by the relative movement between the water and float in the opposite direction, a common shaft ournaled on said float to which said turbines are secured, said shaft being rotated in one direction by the movement of both turbines, and valve devices adapted to alternately open and close said turbines to the passage of the water therethrough.

Signed at Chicago, county of Cook and State of Illinois, this 80th day of May, 1921.

LEON MITELMAN.

WVitnesses:

S. JEsMnn, E. K. LUNDY, Jr. 

